I wouldn't let this incident prevent your online shopping. I'd just stick to reputable sites (like amazon etc) and use paypal if at all possible. If your bank has the feature that you aren't liable for unauthorized transactions then there is NO RISK - except of course the risk that you get a crappy product.

> This is a very clever and misleading virus program...

Yes. If you are serious about virus protection your best protection is probably to employ a Linux operating system. They are more secure so they are harder to violate, there are less people trying to violate them etc etc etc. Ubuntu is a freeware one. I've heard great things about it...

> I have explained to the credit card company that this was a fraudlent claim to rid one's computer of viruses, etc.

Yeah. Trouble is that there are many fraudulant claims out there... Cream that will clear your face of wrinkles, make up that will make your skin blemish free, medication that will cure you of your symptoms of mental disorder, knives that will cut through steel and still peel an orange etc etc etc...